• Product name
    Anti-CD11a antibody [MEM-83]
    See all CD11a primary antibodies
  • Description
    Mouse monoclonal [MEM-83] to CD11a
  • Specificity
    The antibody MEM-83 reacts with CD11a (alpha subunit of human LFA-1), a 170-180 kDa type I transmembrane glycoprotein expressed on B and T lymphocytes, monocytes, macrophages, neutrophils, basophils and eosinophils.
  • Tested applications
    Suitable for: Blocking, Flow Cyt, Functional Studies, IPmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Tissue/ cell preparation (Human). Peripheral blood lymphocytes.

  • Epitope
    The antibody recognizes an unique epitope on CD11a antigen (LFA-1 alpha chain) implicated in activation of LFA-1 complex.



Our Abpromise guarantee covers the use of ab3981 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Blocking Use at an assay dependent concentration. PubMed: 23039186
Flow Cyt Use a concentration of 1 µg/ml.
Functional Studies Use at an assay dependent concentration. The antibody MEM-83 directly induces the binding of T cells to purified ICAM-1. Using an in vitro-translated CDlla cDNA deletion series, the MEM-83 activation epitope was mapped to the "I" domain of the LFA-1 alpha subunit. The studies have therefore identified a novel LFA-1 activation epitope mapping to the I domain of LFA-1, which could play a role in the regulation of LFA-1 binding to ICAM-1.
IP Use at an assay dependent concentration.


  • Function
    Integrin alpha-L/beta-2 is a receptor for ICAM1, ICAM2, ICAM3 and ICAM4. It is involved in a variety of immune phenomena including leukocyte-endothelial cell interaction, cytotoxic T-cell mediated killing, and antibody dependent killing by granulocytes and monocytes.
  • Tissue specificity
  • Sequence similarities
    Belongs to the integrin alpha chain family.
    Contains 7 FG-GAP repeats.
    Contains 1 VWFA domain.
  • Domain
    The integrin I-domain (insert) is a VWFA domain. Integrins with I-domains do not undergo protease cleavage.
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • Lymphocyte function associated antigen, type 1, alpha subunit antibody
    • Antigen CD11A (p180), lymphocyte function associated antigen 1, alpha polypeptide antibody
    • Antigen CD11A antibody
    • CD 11a antibody
    • CD11 antigen-like family member A antibody
    • CD11a antibody
    • CD11a antigen antibody
    • Integrin Alpha L antibody
    • Integrin alpha-L antibody
    • Integrin gene promoter antibody
    • Integrin, alpha L (antigen CD11A (p180), lymphocyte function associated antigen 1; alpha polypeptide) antibody
    • ITAL_HUMAN antibody
    • Itgal antibody
    • ITGAL protein antibody
    • Leukocyte adhesion glycoprotein LFA 1 alpha chain antibody
    • Leukocyte adhesion glycoprotein LFA-1 alpha chain antibody
    • Leukocyte Adhesion Glycoprotein LFA1 Alpha Chain antibody
    • Leukocyte function associated molecule 1 alpha chain antibody
    • Leukocyte function-associated molecule 1 alpha chain antibody
    • LFA 1 alpha (LFA1A) antibody
    • LFA 1 alpha antibody
    • LFA 1 antibody
    • LFA 1A antibody
    • LFA-1A antibody
    • LFA1A antibody
    • Ly15 antibody
    • Ly21 antibody
    • Lymphocyte function associated antigen 1 antibody
    • Lymphocyte Function Associated Antigen Type 1 alpha antibody
    • lymphocyte function-associated antigen 1, alpha polypeptide antibody
    • p180 antibody
    see all

Anti-CD11a antibody [MEM-83] images

  • Transmigration of A375 Human melanoma cells, blocked using ab3981.

    Melanoma cells were labeled with 10 µM of lipophilic fluorescent dye for 20 minutes at 37°C. Cells were added to wells containing either 1 µg/ml of isotypic control, or 1 µg/ml of anti-CD11a (ab3981) or anti-CD18 (ab8220) antibodies. Melanoma cells were allowed to migrate at 37°C and 5% CO2 for 48 hours. Migration was observed under a fluorescence microscope.

References for Anti-CD11a antibody [MEM-83] (ab3981)

This product has been referenced in:
  • Ghislin S  et al. LFA-1 and ICAM-1 expression induced during melanoma-endothelial cell co-culture favors the transendothelial migration of melanoma cell lines in vitro. BMC Cancer 12:455 (2012). Blocking . Read more (PubMed: 23039186) »
  • Choi EY  et al. Regulation of LFA-1-dependent inflammatory cell recruitment by Cbl-b and 14-3-3 proteins. Blood 111:3607-14 (2008). Read more (PubMed: 18239087) »

See all 5 Publications for this product

Product Wall

see Landis papers for more details Clone MEM-83 has been reported to uniquely activate LFA-1 to bind ICAM-1. Please see: Landis RC et al. A novel LFA-1 activation epitope maps to the I domain. J Cell Biol 120:1519-27 (1993). PubMed: 7680657 mAb ...

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